Pulley.



N. B. HURD.

PULLEY.

APPLICATION FILED JULY 3, 1914.

1,1 1 1,260, Patented Sept. 22, 1914.

2 SHEBTS-SHEET l.

r wi bwmaoz J. 8 N C F! jl ol'i/zazzge aszi THE NORRIS PETERS (20.. PHcM-LITHQ, WASHINGTON. By C.

N. B. HURD.

PULLEY.

APPLIOATION FILED JULY 3, 1914.

Patented Sept. 22, 1914.

THE NORRIS PETERS 60., PHOTO-LITHQ. WASHINGmN. D. C.

UNITEDS W N NORMAN B. HunnQoF NEW BRITAIN, 'oo mvnorronr, assreivoia 'ro ri-IE 'AMERICAN" HAnnWAnE CORPORATION, OF NEW BRITAIN, oonnnoricur, n CORPGRATIONOF T a: all who knit may concern.- Y i ."CONNECTICUT.

Specification of Letters Patent.

P LLEY.

mam filed my; 1914. Serial No. ceases] Beit known that I, NORMAN B. Home,

New Britain, county of Hartford, State of Connecticut,..have invented certain new and useful Improvements in'Pulleys, of which the following is a full, clear, and exact -de-' scription-p. c v ,Myl invention relatesto Overhead pulley construction, the invention being directed to improving-certain pulleys used in c0n]unction with other pulleys in the triple and quadruple type ofwindow sash liftingde: vices. These new pulleys are alwayswholly concealedin use and access to the sameis difficult. By my improvement, the applica-' tion of the pulleys and the replacement of such pulleys is easily effected. .A better un derstanding of the difliculties-overcomeuwill scription drawings, igure 1 isa sectional view on a small scale, of the window casing showing several windows and the window lifting means; Fig. 2 is a plan View partly in section on the line 2 2 of Fig.1; Fig. 3 is a side elevation of my improved pulley construction, partly bro en T away; Fig. 4

is a section thereof onthe line 4. Fig. 5 is a perspective view of the pulley, base; and, Fig.6 is aplan view of the pulley housing;

Referring first to Figs. 1 and 2, l represents a window casing having. therein w1ndow sash 2- 3. The window casing has a well 4 "at its edge for the windowweights 5+6. These weights are respectively connected to chains 78, which respectively of window sash is located. My invention relates to an improved construction for the pulley 9, no 'noveltybeing claimed for the pulley 10, as that is set forthand claimed m U. S. Letters Patent No. 978,796 dated December 13, 1910. As will be seen, the pulleys 9 and 10 are located adjacent the header 11 of the frame, the pulley9 being concealed be had from a reading of the following de-.

1F igs. 3 to 6 inclusive.

within the window frame, the window frame I I c a being prepared at the mill and-then sent to citizen of the UnitedflStates, res1dingat the'building andset up and boxed in. The

pulley 9 is completely concealedsand there.

fore it is' necessary, in the event it is desired I to apply or remove such a pulley, to work through the passage in the uppercorner of the window casing provided for the pulley quires. The chains 7. 8 may obviously lead in any desired 'way after leaving pulleys 9. l0. That is to "say, they may leadfdirectly down to thesash from the pulley 10, or they may lead from the pulley 9 over to another pulley, such as 10, andthencedirectly down'to the sash. Various combina-i tions and arrangements in the leading of the chains may be eflected, depending entirely upon the number, style and arrangement of 'windows'with which the pulleys are associated. It will be observed that the pulley 9Qis whollyindependent of the pulley 10...

That is to say, it is held in place wholly independently thereof and may be;-..spaced therefrom or located closely adjacent there- 'toas the-particular requirements demand.

Having thus in a general way described the purposes and location of the pulley 9, I will now proceed to describe-the improved construction and will direct attention to My improved pulley includes the, sheave 12, the housing 13, and the separate base 14. -The pulley 12 is of course suitably mounted to rotatein the housing. 13, a suitable pivot 15 being provided. Thehousing 13 and the base 14: 211'8. so constructed that they are readily interlocked in the operative position shown in solid linesin Figs. 3 and 4. The base l lmaybe said to be of U- shaped outline, as shown in Fig. 5; and at each opposite inner edge this base in its preferred construetionis provided with. supporting ledges 16-516, which terminate short of the inner end of said U-sh'aped frame. At opposite sides of the U-shaped frame I also provide rigid locking lugs 17-17, which likewise terminate short of the inner end of said U-shaped frame. The upper surface of the inner end of each supporting ledge 16 is preferably beveled as shown at 16*, Fig.

5, while the under sides of the lugs 17 are likewise beveled as shown at 17. The lower edge of the housing 13 is arranged to rest upon and be supported by the ledges 16-16 and the lower edges of said housing are preferably offset as indicated at'18-18, Figs. 1- and 6. At the inner ends of the offsets 18-18 are upwardly directed locking sh0ulder s 1919.

Now, assuming it is desired to assemble the parts of the pulley: The housing 13- is I slightly tilted and slid into the position indicated in dotted lines Fig.3, the shoulders 1919-passing through the space between the beveled portions 16 17. The housing 13 is then swung down to the position indicated in solid lines Fig. 3, whereupon the shoulders 19-19 will project up back ofthe locking lugs 1717 of the frame, and the offsets 1818 will rest upon the supports -1616, the pivot center 15 being located above the supporting ledges 16. When the parts are in this position, it is obvious that the: housing 13 is held againstany slldmg movement on the base 14, and hence the 1 strain of the chain 7 which is in a direction to tend to slide the housing 13 to the right as viewed in Fig. 1, is incapable of dislodging the housing 13. It will now be seen that if the pulley 10 is removed from the casing, as is'possible, an opening is afforded into the inclosed space in which the pulley 9 is located." By taking the strain oif the chain 7,- the pulley housing 13 maybe tilted to the dotted line position, Fig. 3, thereby disengaging the locking lugs and shoulders,

whereupon the housing 13 with its sheave maybe removed through the opening in the corner of the frame inwhich the pulley 10 ordinarily stands, it being understood, of

course, that the dimensions of the passage in which the pulley 10 stands is sufliciently large to not only permit the pulley 10 to'be inserted and removed, but also large enough to permit the pulley 9 to be inserted or removed.

part of the pulley 9 would bein place ready to receive the other section thereof, which would of course be inserted after the window casing is set up and boxed in ready for use and ordinarily at the same timeth'e pulleys 10 are inserted.

By my improved construction, the pulley 9 may be located as close tozora's far from' the pulley 10 as the requirements} demand,

it being a fact that the distancebetweenffthe 1 chains 7 and 8 varies in difierent cases in accordance with varying conditions.

What-Icla1m 1s:

1. An overhead pulley constructiom comprisinga sheave and a sheave carryingeleimam, a base support with means for detachably interlocking said sheave carrying" element with said} base $11 one part relatively to thegother. I

2. An overhead pulleylconstruction, com.- prising a sheave and a sheave carrying element, a base support with means fordetachably interlocking said sheave carrying element with said basesupport'by tilting 'one part relatively to theother, said means. in-

cluding interlocking lugs and shoulders-er ranged to be engaged and di'sen'gaged'by rp byi i tilting the s'heave carrying element rela i 'tively to the base support.

3. In an overhead pulley construction, a base support in general of a U-shaped outline, a sheave carrying element arranged to be detachably interlocked} therewith and supported thereby, the interlocking means including a lug on said base and a cooperatingf shoulder on said'sheave carrying ele-: ment, said mterlockmg parts being-engaged" when-the sheave carrying'element and base; are 1n OPGItLlJlVG'POSllilOIl, and being disena" gaged when-said parts are tilted at an angle to the operative position.

4. In anoverhead pulley construe base in general of U-shaped outline, a supporting ledge at the inner opposite edges "of. the same, each of said "ledges terminating short of thejinner'end of said'base, an: interlocking lug near the inner end of said base, said lug having an interlocking shoultion, a

der facing the inner end of s'aid' base, a

sheave carrying element having an upwardly prO ecting interlocking shoulder arsaid shoulder facingin an opposite direction from "said interlocking lug and ar-' ranged to'be engaged and disengaged therefrom by tilting said sheave carryingelement relative'to said base. 7 i

5. In an overhead pulleyconstruction, a sheave carrying element, a substantially U- shaped base support vtherefor, said sheave carrying'element being arranged to project into the space between the sidewalls and the end of said U shaped base, afrigid lock 1- 13 ranged to coact with the interlocking. lug,"

ing-shoulder on 'thebase, and a -complemen 1,111,260 I t a tary loeking shoulder on said sheave carrysheave carrying element relatively to the ing element, said interlocking shoulders'cobase.

operating to prevent'indepel'l dent longitudinal movement of 'ithe-sheave carrying ele- H SORMAN HURD' 5 ment and the base when the parts are in Witnesses:

operative position, said interlockin shoulv R. S. GOLD,

ders being disengageable by tiltmg the WM. Soon;

Copieso! this :patent may be obtained tor five ceh ts each, by addressingthe Commissioner of Patents,

' Washingtomhfl. 

